VS
At a Glance
Power
523hp @ 5500
335hp @ 8000
Torque
553lb-ft @ 1800
295lb-ft @ 5000
Fuel
20 mpg est.
—
Engine
4.4 L/268ci
—
Choosing between the BMW 8 Series and the BMW I5 is one of the most common decisions car buyers in the United States face. The BMW 8 Series delivers 523hp @ 5500 while the BMW I5 produces 335hp @ 8000. Pricing starts at $94,500 for the 8 Series and $67,100 for the I5. Both vehicles have their merits. The right choice depends on your priorities: fuel economy, performance, towing ability, safety features or total cost of ownership. This comparison covers every specification available so you can make an informed decision.
Specification
BMW 8 SeriesM850i xDrive Convertible 2026 - From $94,500
BMW I5eDrive40 Sedan 2025 - From $67,100
Performance
Power Output (hp)
523hp @ 5500
335hp @ 8000
Torque (lb-ft)
553lb-ft @ 1800
295lb-ft @ 5000
Engine & Drivetrain
Engine Capacity
4.4 L/268ci
—
Cylinders
8
—
Fuel Type
Gasoline
Electric
Forced Induction Device
Turbocharged
—
Transmission
Automatic
Automatic
Number of Gears
8
1
Drive Wheels
All Wheel Drive
Rear Wheel Drive
Fuel Economy
Fuel Economy (Combined, est.)
20 mpg est.
—
Fuel Economy - City (mpg)
17mpg
—
Fuel Economy - Highway (mpg)
24mpg
—
Fuel Tank Capacity (gal)
18gal
—
Dimensions
Length (in)
191.2in
199.2in
Width (in)
74.9in
74.8in
Height (in)
53in
59.6in
Wheelbase (in)
111.1in
117.9in
Curb Weight (lbs)
4736lbs
4916lbs
Safety
ABS
✓ Standard
✓ Standard
Brake Assist
✓ Standard
✓ Standard
Stability Control
✓ Standard
✓ Standard
Traction Control
✓ Standard
✓ Standard
Driver Airbag
✓ Standard
✓ Standard
Passenger Airbag
✓ Standard
✓ Standard
Side Airbags Front
✓ Standard
✓ Standard
Curtain Airbags
—
✓ Standard
Features & Tech
Air Conditioning
✓ Standard
✓ Standard
Climate Control
✓ Standard
✓ Standard
Cruise Control
✓ Standard
✓ Standard
Adaptive Cruise Control
✓ Standard
✓ Standard
Bluetooth
✓ Standard
✓ Standard
Backup Camera
✓ Standard
✓ Standard
Rear Parking Aid
✓ Standard
✓ Standard
Sunroof
—
✓ Standard
Heated Seats
✓ Standard
✓ Standard
Power Seat Adjustment
✓ Standard
✓ Standard
Keyless Entry
✓ Standard
✓ Standard
Alloy Wheels
✓ Standard
✓ Standard
The Verdict
Which Wins?
Overall Winner
Tie
1 / 4 categories
Performance
8 Series
Fuel Economy
Tied
Value
I5
Practicality
Tied
Pros & Cons
BMW 8 Series
Well-rounded specification
Higher starting price
BMW I5
Lower starting price ($67,100)
Few notable weaknesses
Frequently Asked Questions
Which has more power, the 8 Series or I5?
The 8 Series produces 523hp @ 5500 and 553lb-ft @ 1800 of torque while the I5 delivers 335hp @ 8000 and 295lb-ft @ 5000 of torque. The 8 Series is the more powerful option.
What is the price difference between the 8 Series and I5?
The 8 Series starts from $94,500 and the I5 from $67,100. The I5 is cheaper by $27,400 at this variant level. Final on-the-road pricing varies by dealer and specification.
Should I buy the 8 Series or the I5?
It depends on your priorities. If fuel economy matters most, check the mpg figures above. If you need towing capacity, compare the towing ratings. For day-to-day driving - commutes, school runs and highway trips - consider ground clearance, service network coverage, and total cost of ownership including insurance and maintenance. Use the spec tables above to compare every detail before making your decision.
Also Consider